unit f two hypothesis test...unit f-two-sample hypothesis testf. i-confidence interval for...
TRANSCRIPT
Unit F - Two - sample Hypothesis TestF. I - confidence Interval for Difference Between Two- sample Means
n ,= 100
I,= 450
S,= 20
Nz = 150
① ② I,= 410
Sz = 45
Step : check the assumptions
n ,= 100 330
Nz = 1507, 30 } ⇒ Z - CI is ok
6,= 62
T ←pop. Std of total
pop . standard den . points for traditionalof the total points students
for students in SWYS group
step : 959. CI ⇒ 2=0.05-
( I - E) ± ✓s÷ts÷ -
- 450-4101 I 1.96/2%+7%2I ¥ 40 I 8.2 = ( 31.8 , 48 . 2)
£0.025 = l.96
The 958 CI for the difference in the average total points forthese 2 methods is ( 31.8. 48.2) .